"Menu" page: Add search and filter functionality

[davidkopp]

We currently have a menu page that displays all the available items. What's missing is the search and filter functionality...

General requirements:

We need to be able to find products according to content

• Allergies - Gluten, Nuts, Lactose etc.
• Alcohol content
• Tannins (for wine)

Tasks:

• [ ] Add a search bar that finds beverages by name, category, ...
• [ ] Add 3 filter options: alcohol strength, allergies, tannies (wine)